3D printers

In the XV century, Johannes Gutenberg invented the printer. This little step, a simple invention, constituted a huge change in human race. It gave the ability to copy documents very quick and easy. This made that people could reach more books and then the civilization becomes more wise and very fast.

Nowadays, in the XXI century something very related to this can change the world again. I am talking about the 3D printers. This "simple" invention builds tridimensional objects just loading the sketches on your computer. A simple idea, an easy object, the most stupid thing, can be now build at your home. No more China, no more expensive products. You are the one that can make your needs come true. 

Last weeks, it has been discussed the utility of this printer: People designed weapons, NASA is investing in developing a 3D printer to apply to food, a kind of transparent layer to hide objects, etc. These are some of the possibilities that this machine gives to the user. But now, do we leave people to build anything the want? Is that dangerous? Is copright going to be applied to things printed with this? Last questions are of a huge interest for me. I do think that people is free to print anything they want. However, every person should know what can be or should not be printed.

 My conclusion is: "Wars came out with relevant inventions. I hope this invention doesn't come with a war"